Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover - AR15.18-P-1000-07MNG

Engine 177 in model 253 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

1. Remove screw/bolts (2) .
2. Remove screw (3) of ground line .
3. Release and disconnect electrical connector of left quantity control valve (Y94/1).
4. Release and disconnect electrical connector of ignition coil for cylinders 5+6 (T4/2).
5. Release and disconnect electrical connector of ignition coil for cylinders 7+8 (T4/3).
6. Release and disconnect electrical connector of left fuel pressure and temperature sensor (B42/2).
7. Release and disconnect electrical connector (20) for knock sensor 4 (A16/4).

   Courtesy of MERCEDES-BENZ USA

8. Release and disconnect electrical connector of left intake camshaft Hall sensor (B6/4).
9. Release and disconnect electrical connector of left exhaust camshaft Hall sensor (B6/6).
10. Release and disconnect electrical connector of left charge air temperature sensor (B17/14).
11. Release and disconnect electrical connector of pressure sensor downstream of left throttle valve (B28/22).
12. Release and disconnect electrical connector of left intake camshaft adjustment solenoid (Y49/4).
13. Release and disconnect electrical connector of left exhaust camshaft adjustment solenoid (Y49/6).
14. Release and disconnect electrical connector of purging pressure sensor (B4/4).
15. Release and disconnect electrical connector of left throttle valve actuator (M16/60).
16. Release and disconnect electrical connector of pressure sensor upstream of left throttle valve (B28/20).
17. Release and disconnect electrical connector of left overrun mode bypass air switchover valve (Y101/1).
18. Unclip engine wiring harness (1) at bracket (4).
19. Unclip subharness (11) at bracket (10).
20. Unclip engine wiring harness (1) at cylinder head cover.
21. Remove engine wiring harness (1) in direction of arrow.
22. Place engine wiring harness (1) to one side.
23. Connect in reverse order.